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How do you ultilize physics?
A knowledge of physics will help you solve any practical problems you may have. For instance I was working outside and I had to move two tons of rock. My wheel barrel's wheel was flat so it was a serious pain moving the rocks. Finally, I thought about the problem. With the wheel flat on the wheel barrel I was working against sliding friction rather than rolling friction. Which was a serious pain. In order to make my life easier I had to find a way to move the rocks with the least amount of work done. If I wanted to do the least amount of work I decided I should be acting against the least amount of friction. So instead of shoveling up the rocks than carrying them to the wheel barrel and then dragging the wheel barrel and finally dumping it. I just threw the rocks through the air, the only work I had to do was to give the rocks their initial velocity and after that their momentum helped them travel the rest of the way. Without my knowledge of physics I might have not realized how to solve this problem. There is another case in which I was sitting in the lab at my university and my professor was getting in an argument with a grad student. The grad student was a mechanical engineering major who was designing a component for his robot. Well the argument was about the amount of energy that could be produced when using this type of mechanism. The grad student believed that if he did some funny things with his mechanisms he would get more energy going out than there was going in. My professor having a strong background in physics pointed out to him that if he were to place all of his mechanisms in a black box then what came in had to come out. Or the state of the system at the start had to be the state of the system at the end. This basic observation is what makes an understanding of physics extremely useful. Physics is a science based off of abstractions. So whenever a physicist comes across a problem he simply removes the extraneous details that complicate the situation and uses only the most essential information to solve the problem. If you were going to utilize physics to aid you in some monetary fashion then it would be useful to have an understanding of the conservation of energy before you invested in some machine that was going to do more than work than the work put into it. Things like this happen all the time like the myth I used to here about in high school about some genius inventing an engine that could go a hundred miles off of one gallon of gasoline. A person who knew enough physics would know that there is only so much energy stored in a gallon of gasoline. Physics can be utilized in a myriad of different ways it is only up to the person who wields the knowledge and what there imagination can do that makes the difference.
What is the physical interpretation of the term v dot grad v in the context of fluid dynamics?
In fluid dynamics, the term v dot grad v represents the rate of change of velocity in the direction of the velocity vector. It describes how the velocity of a fluid changes as it moves through space.
Why gradient of scalar field is vector?
The Law of Numbers?There are two kinds of numbers scalars and vectors. The law of multiplication of Numbers says, the product of a scalar and a vector is a vector.In 4D derivative is X = [d/dr, GRAD] = [d/dr, Id/dx + Jd/dy + kd/dz]GRAD is a vector.The 4D derivative of a number [b,B], where b is the scalar and B is the vector, is;X[b, B] = [d/dr, GRAD] [b.B] = [db/dr - GRAD.B, dB/dr + GRAD b + GRADxB]The general rules of numbers are:1.Scalar by scalar products are scalars e.g. db/dr2. Scalar by vectors and vector by scalars are vectors, e,g, dB/dr and GRAD b3. Vector Dot (.) Products are scalars ,e.g. GRAD.B4. Vector Cross (x) Products are vectors, e.g. GRADxB.
When travelling without a load up or down a grad slope ramp or incline always?
Exercise caution and maintain a safe speed to avoid losing control. Monitor your brakes to prevent overheating, and consider shifting to a lower gear for additional control. Be mindful of potential hazards like debris or slippery surfaces.
How far will an electron-positron pair travel in a lead shield if the incident photon is 5 MeV and the pair both have the same energy?
== If the question can be imagined and framed properly, it can be asked, even if it has no "real world" applications. But let's get real with this one. The answer is "not very far" into the lead shield. A sheet of aluminum foil would stop the pair of particles. We've got problems with this one. There isn't a handy table for looking up the slowing down length of lead for positrons across a range of positronic energies, but let's take a short detour. We need some review. A positron and an electron are created in pair production. You're already fairly familiar with the electron. It has a negative charge, doesn't weigh very much (has little mass), and when it's moving, it will have to contend with the orbiting electrons of all the atoms in its path of travel. (Even in air, there are a tons and tons of "speed bumps" in the way of our little electron.) The electron can't cope well with these "flocks" of critters of its own kind, even if it is of high energy. It will scatter and lose energy at just about every atom it encounters along its trajectory (if we can use that term). It takes little time, that is, it can't travel very darn far, before the "encounters" it has with anything it "bumps into", i.e., those scattering events, "suck" all the energy out of our little electron and it's left hanging. It has a very short mean free path in air. In any kind of liquid or solid, it's even shorter. A lot shorter. And it's the same with a positron - except that it will join an electron at some point along its journey and the pair will be mutually annihilated. A couple of hot gamma rays will leave the scene of the event. Even with a few MeV of energy, the mean free path of an electron and a positron is extremely short in air. Oh, and these particles will be traveling in oppositedirections when they are created. It isn't like they'd be moving as a pair in the same direction like cars in adjacent lanes on a freeway. What about plumbum? We're talking mean free path here - the mean free path of an electron and a positron in lead. What is the slowing down length for a positron or an electron at a couple of MeV in lead? Short. Very short. Very, very short. Laying out the problem mathematically would just be an exercise in probability and statistics. And forget about setting up an experiment to "prove" the calculated answer. Got a clever little application for running Monte Carlo calculations on your computer? Start identifying and defining your variables. And don't forget to include factors that deal with both inelastic andelastic scattering. You'll have both happening here 'cause it's "real world" stuff. So no fudging and leaving out elastic scattering possibilities. It's a physics grad student's nightmare. Good luck with all that. What about conducting an experiment? The only thing close to being effective at "looking" at the penetration power of the positron is probably a spectroscope or PET imager, but how are you going to use them? The spectroscope would be difficult to apply for the purpose here (impossible, probably), and the PET units can't "resolve" the tiny distances we're talking about. By the way, it is true that you'd only be looking at the annihilation events resulting from the positron's recombination with an electron in PET imaging. And the ability of those machines is a long way from having the kind of resolution you'd need to "see" results that you could measure. You'd doubtless have better luck with just calculating an answer.
What were the grad school admission results?
The grad school admission results were positive, indicating that the individual was accepted into the graduate program.
What is the average grad school GPA of applicants in your program?
The average grad school GPA of applicants in our program is 3.5.
What were the grad school admissions results for the applicant?
The applicant was accepted into graduate school.
How should one prepare for grad school after acceptance?
After being accepted to grad school, one should prepare by familiarizing themselves with the program requirements, connecting with faculty and peers, securing funding if needed, and organizing their schedule to balance coursework and research effectively.
What are some reputable grad school forums where I can seek advice and information about the application process and program options?
Some reputable grad school forums where you can seek advice and information about the application process and program options include GradCafe, College Confidential, and Reddit's Grad School subreddit.
When did you find out if you were accepted into grad schools?
You find out when you have been accepted to grad schools is when you get your deploma.
Is their a specific scholarship used for grad schools?
Grad school scholarships will depend on the program you're enrolled in and the school you attend. You should check out the school you're interested in attending to find out what's offered.
When is the deadline to apply for grad school for fall 2017?
The deadline to apply for grad school for fall 2017 varies depending on the university and program. It is typically between December 2016 and March 2017. It is important to check the specific deadline for each school and program you are interested in.
How many letters of recommendation are required for grad school applications?
The number of letters of recommendation required for grad school applications varies by program, but typically 2-3 letters are needed.
What are the grad school admission results for 2023"?
The grad school admission results for 2023 vary by institution and program. It is recommended to check the specific school's website or contact the admissions office for the most up-to-date information.
When is the deadline to apply to grad school for fall 2017?
The deadline to apply to grad school for fall 2017 varies depending on the program and university. It is typically between December 2016 and March 2017. It is important to check the specific deadline for each program you are interested in.
Is a 3.8 GPA considered good for grad school admissions?
Yes, a 3.8 GPA is generally considered good for grad school admissions. It demonstrates strong academic performance and can enhance your chances of being accepted into graduate programs.
